From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH 1/6] avcodec/utils: allocate a line more for VC1 and WMV3
Date: Thu, 23 Feb 2023 23:26:01 +0100
Message-ID: <20230223222601.GW1949656@pb2> (raw)
In-Reply-To: <20230111204221.22550-1-michael@niedermayer.cc>
[-- Attachment #1.1: Type: text/plain, Size: 895 bytes --]
On Wed, Jan 11, 2023 at 09:42:16PM +0100, Michael Niedermayer wrote:
> Fixes: out of array read on 32bit
> Fixes: 54857/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1_fuzzer-5840588224462848
>
> The chroma MC code reads over the currently allocated frame.
> Alternative fixes would be allocating a few bytes more at the end instead of a whole
> line extra or to adjust the threshold where the edge emu code is activated
>
> Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> ---
> libavcodec/utils.c | 1 +
> 1 file changed, 1 insertion(+)
will apply remaining bits of this patchset
[...]
--
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
The misfortune of the wise is better than the prosperity of the fool.
-- Epicurus
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]
[-- Attachment #2: Type: text/plain, Size: 251 bytes --]
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
prev parent reply other threads:[~2023-02-23 22:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-11 20:42 Michael Niedermayer
2023-01-11 20:42 ` [FFmpeg-devel] [PATCH 2/6] avcodec/utils: Ensure linesize for SVQ3 Michael Niedermayer
2023-01-11 20:42 ` [FFmpeg-devel] [PATCH 3/6] avcodec/bink: Fix off by 1 error in ref end Michael Niedermayer
2023-01-11 20:42 ` [FFmpeg-devel] [PATCH 4/6] avcodec/bink: Avoid undefined out of array end pointers in binkb_decode_plane() Michael Niedermayer
2023-01-11 20:42 ` [FFmpeg-devel] [PATCH 5/6] avcodec/bonk: Avoid undefined overflow in quant Michael Niedermayer
2023-01-11 21:06 ` Paul B Mahol
2023-01-12 14:29 ` Michael Niedermayer
2023-01-11 20:42 ` [FFmpeg-devel] [PATCH 6/6] avcodec/bonk: Check ntaps against buffer size Michael Niedermayer
2023-01-11 21:06 ` Paul B Mahol
2023-01-12 14:30 ` Michael Niedermayer
2023-01-12 7:38 ` [FFmpeg-devel] [PATCH 1/6] avcodec/utils: allocate a line more for VC1 and WMV3 Andreas Rheinhardt
2023-01-12 14:43 ` Michael Niedermayer
2023-02-23 22:26 ` Michael Niedermayer [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230223222601.GW1949656@pb2 \
--to=michael@niedermayer.cc \
--cc=ffmpeg-devel@ffmpeg.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
This inbox may be cloned and mirrored by anyone:
git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \
ffmpegdev@gitmailbox.com
public-inbox-index ffmpegdev
Example config snippet for mirrors.
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git